Filter.



0. R. PERRY & 0. MLFINOIH.

FILTER.

APPLICATION TILED 00119, 1908.

Patented May 18, 1909.

INVgNYURS CORTEZ R. PRRYCHARLE5 M. F1 mm,

TH BIR UNTTEE CORTEZ R. PERRY AND CHARLES M. FINGH, OF SAN FRANCISCO,CALIFORNIA; SAID PERRY FETCE.

ASSIGNOR TO SAID FINCH.

FILTER.

To all whom it may concern:

Be it known that we, Conrnz R. PERRY and CHARLES M. FINon, citizens ofthe United- Statcs, residing in the city and county of San Francisco andState of California, have in vented new and useful Improvements inFilters, of which the following is a specification.

Our invention relates to improvements in filters.

It consists in a combination and arrangement of parts, and in details ofconstruction which. will be more fully explained by reference to theaccompanying drawings, in Which Figure 1 is a sectional elevation of thefilter. Fi 2 is an end view.

Our filter is composed of two i'rustums of cones, A and B; theselrustums having annular flanges 2 around their larger ends, and

( these flanges 2- may be perforated 0r slotted,-

as shown at 3, for the reception of bolts by which their larger diametermay be secured together, and the l'rustums taper away from these flangesin each direction having substantially a common axis. One of the flangeshas a sunken groove or channel around the inner portion, and within thisis fitted a screen 5 of any suitable or desired mesh. The longerlrustuin is filled with a suitable filtering material, which is held inplace at one end by the screen 5, and. may be similarly held at thesmaller end by a screen 5, the two screens preventing the material frombeing washed out. At the smaller end of each of these cones are made oenings as at 6 and 7 those openings serve or the attachment ol' thesupply and distributing pipes. The supply pipe is connected with theshorter cone A, and the water admitted into the cone expands to the fulldiameter of the larger end, passing through the screen 5, and thencebeing received into the filter material. The water is thus distributedso as to first reach the filtering material, where the area is thelargest, and the greater portion of the filtrate will be delivered uponthe upper and larger areaol the filtering material. This filteringmaterial gradually contracts in area from the larger to the smaller end,and

as the liquid to be filtered passes throu h it, thefiner portions of thesediment will be gradually cau ht, and the diminished area of the filterwill )e sufficient l'or the eonstantl diminishing quantit of sedimentwhich it Is desired to deposit tlierein, so that when the Specificationoi -Letters Patent.

Application filed 0ct0ber19, 190B.

Patented May is, 1909.

Serial No. 458,407.

liquid has reached the lower and smaller end of the filter it will havebeen substantially deprived of all the deleterious material which it mayhave contained, and by reason of the gradually decreasing area of thefiltcr presented for the assage of the liquid, the heaviest portion willbe arrested in the upper portion of the filter, while the smallercontracted portion will be sullieient to arrest any liner substanceswhich may be carried by the liquid to that point; the filtering beingsubstantially progressive 'l'rom one end to the other of the filter.

Whenever at any time, it is desired to cleanse the filter, it may bedone by reversing the flow of the liquid which may be introduced throughthe lower end of the longer cone, and pass backwardly through the filterend into the shorter cone A, from which it may escapethrough a cock at8, which serves for the purpose; this passage being normally closed whenthe filter is in action.

. If at any time it be desired to use the water without passing itthrough the filter, this may be done by means of a bypass pipeconnecting with the supply and discharge above an d below the filter;and having suitable controlling coeks.

In order to conveniently separate the two parts of the filter to changethe filtering material, or for other pur poses when access to theinterior is desired, t 1e pipe 9 connects at its lower end with theupper cone A, and its 0 posite end connects with an elbow 10 on t re endof a pipe 10 leading from a tee 10 having two short connecting pipes 11in line. The ends of these pipes are turnable in unions 12 to which thesupply pipe also connects.

The cone B is rigidly supported by the discharge pipe 13 which connectswith a tee 14 in line with the sup ly pipe, and through which thedischarge lows.

15 and 16 are cocks or valves by which the flow of water is controlledas-previously described, thus it' a direct flow ol" unfiltered water isdesired, both these cocks are opened. It filtered water is wanted, cocki5 is closed, and water must then pass through the filter. If it isdesired to wash the filter, cock 15 is opened, and 16 is closed, and thecock 8 is opened. The cook 17 is also closed to prevent wa'terpasslngwlirectly to the cone A. The pressure then operates to forcewater upwardly through the filter to wash it, and escape at 8.

When the filter is to be opened, the upper part A is disengaged from thepart B, and is thus free to be turned about its swivel joint between theunions ll, thus exposing: the lower section. 7

Having thus described our invention, what We claim and. desire to secureby Letters Patent is--- 1. The combination in a iilter, clcasings havinga form of conical l'rustuins, one of said cones having a greater lengththan the other, a screen iixed between the two cones, a :lilliup; offiltering material Within the longer cone, o ieuings at the smaller endsof each cone, tie shorter cone acting to rereive and distribute theliquid, and the longer (one to lilter and concentrate,and a swivelsupport for said receiving (one.

- 2. A lilter consisting of two conical frusturns having pipe connectingopenings in the smaller ends, flanges at the larger ends, and means ,bywhich saidl'l'langes are united, one of'said flanges having an interiorgroove or channel, a filter screen fitting said groove andsecuredbetween the tWo cones, a "filling of filtering material within thelonger i: one so disposed as to receive the largestarea oi the liquid atits receiving end, and to gradually concentrate the discharge oi saidliquid at the smaller end, and. means forming a s\ 1\'- eled connectionfor the upper end oi the rceeiving cone.

in a 'lllt-Q'l of the el'iaiu teter described, conical chamber connectedand having a water is expanded to the full diameter of the screen, andthen passed through a constantly diminishing; body of "filteringmaterial to the screen across their larger diameters, a oodv offiltering material inelosed in the outermost cone, swiveled first cone,an inlet at the and a discharge troni the apex of the second cone,whereby the apex of the first cone,

swivel connection d isc he rge.

in a filter of the character described, conical el'iainbers separablyunited at their bases, supply and discharge pipesconnected with oppositeends of the chambers, a fixed support [or the discharge cone, and aswivel connection for the receiving cone.

5. illn a filter of the character described, a lixed (one containingfiltering material and having; a discharge pipe at its smaller end, areceiving cone, flanges and separable connections uni ting the bases ofthe cones, unions axially in line with the supply pipe, a swivel pipeturnable in the unions, and connections between said pipe and the uppercone.

(5. in a iilter of the character described, filter chambers separablyunited at their meeting ends, supply and discharge pipes, a

by which the receiving chamber is turna-bly connected. with the sup plypipe, and a controlling cock therefor, a pipe by which the other chamberis rigidly supported and. connected with the discharge, and cocks u peneither side-0t said connection whereby water may be delivered throughthe lilter in either direction, or caused to pass directly withoutentering the filter. .ln testimony weer-cot we have hereunto set ourhands in presence of two subscribing witnesses.

()QRTE" 1 ERRY. (Hair-LS ii. llhiijll.

W' i tnesses M. l) BROWN, V. l). BELL.

